<template>
   <el-container class="home-container">
     <!-- 头部区域 -->
  <el-header>
    <div>
      <img src="../assets/d8cb.jpeg" alt="">
      <span>电商后台系统管理系统</span>
    </div>
    <el-button type="info" @click="logout">退出</el-button></el-header>
  <!-- 页面主体区 -->
  <el-container>
    <!-- 侧边栏 -->
    <el-aside :width="isCollapse ? '64px' : '200px'"> 
      <div class="toggle-button" @click="toggleCollapse">|||</div>
    <!-- 侧边栏菜单区 -->
    <el-menu background-color="#333744" text-color="#fff" active-text-color="#ffd04b"
    :unique-opened="true" :collapse="isCollapse" :collapse-transition="false" router
    :default-active="activePath">
      <!-- 一级菜单 -->
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
        <!-- 一级菜单的模板区域 -->
        <template slot="title">
          <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
       <!-- 二级菜单 -->
          <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id"
          @click="saveNavState('/' + subItem.path)">
             <template slot="title">
          <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
        </template>
          </el-menu-item>
      </el-submenu>
    </el-menu>
 </el-aside>
    <!-- 右侧内容主体 -->
    <el-main>
      <!-- 路由占位符 -->
      <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>

<script>
export default {
  data() {
    return{
      //左侧菜单数据
      menulist: [],
      iconsObj: {
        '125':'iconfont icon-user',
        '103':'iconfont icon-tijikongjian',
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao'
      },
      //  是否折叠
      isCollapse: false,
      // 被激活的连接地址
      activePath: ''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    // 获取所有菜单
    async getMenuList() {
      const {data: res} = await this.$http.get('menus')
      if(res.meta.status !== 200) return this.$message.console.error(res.meta.msg);
      this.menulist = res.data
      console.log(res)
    },
    //  点击按钮，切换菜单的折叠和展开
    toggleCollapse() {
      this.isCollapse = ! this.isCollapse
    },
    // 保存连接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath = activePath
    }
  }
};
</script>

<style lang="less" scoped>
.home-container{
  height: 100%;
}
.el-header {
  background-color: #373D41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-content: center;
  color: #fff;
  font-size: 20px;
  >div{
    display: flex;
    align-items: center;
    span{
      margin-left: 15px;
    }
      img{
     width: 75px;
     height: 75px;
     border-radius: 30%;
   }
  }
}

.el-aside {
  background-color: #333744;
  .el-menu{
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}
.toggle-button{
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>